sound modulation

steampunk steam punk cogwheel mechanical mechanic machinal power-driven techno screen equalizer oscilloscope oscillograph monitor monitor screen sonar echo-sounder fathometer scientific science sciential technique technology engineering technics recorder pulse momentum impulse impetus impulsion sound tune bell blast noise modulation electronic test seismogram sonic radiolocator radiodetector wave signal grid modulation signal beep horn call cue audiogram encephalogram diagram chart figure graph pattern template sample model shape vector metallic metal metalline tin-pan ironwork iron round circular rotund cool orbicular moony circle globe ball disk green pink